WO2023052660A1 - Lamela y módulo lamelar para decantador - Google Patents
Lamela y módulo lamelar para decantador Download PDFInfo
- Publication number
- WO2023052660A1 WO2023052660A1 PCT/ES2022/070495 ES2022070495W WO2023052660A1 WO 2023052660 A1 WO2023052660 A1 WO 2023052660A1 ES 2022070495 W ES2022070495 W ES 2022070495W WO 2023052660 A1 WO2023052660 A1 WO 2023052660A1
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- Prior art keywords
- lamella
- fold
- plate
- longitudinal
- structural
- Prior art date
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- 241000446313 Lamella Species 0.000 title claims abstract description 134
- 125000006850 spacer group Chemical group 0.000 claims description 21
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
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- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 6
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- 239000007924 injection Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 31
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- 238000013461 design Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
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- 230000008569 process Effects 0.000 description 6
- 238000010908 decantation Methods 0.000 description 5
- 230000035508 accumulation Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 238000000265 homogenisation Methods 0.000 description 4
- 230000002028 premature Effects 0.000 description 4
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- 238000004873 anchoring Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
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- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
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- 239000000516 sunscreening agent Substances 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
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- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0042—Baffles or guide plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0003—Making of sedimentation devices, structural details thereof, e.g. prefabricated parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0066—Settling tanks provided with contact surfaces, e.g. baffles, particles with a meandering flow pattern of liquid or solid particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0069—Making of contact surfaces, structural details, materials therefor
Definitions
- the present invention belongs to the technical field of devices and installations for the treatment of effluents contaminated by impurities in the form of suspended solids, for example and without limitation, in wastewater treatment plants and drinking water treatment plants.
- the object of the invention is a lamella intended for use in a lamella clarifier, as well as a lamella module intended for use in a lamella clarifier.
- a decanter is a device that is commonly used in effluent purification processes (that is, liquids that flow in an industrial facility) for the removal of suspended solid impurities present in said effluents and, in particular, in water purification. residual and potabilization of drinking water.
- the decanters of interest in the present invention are of the "lamellar" type and are provided with lamella modules, in order to increase their performance.
- the incorporation of said lamella modules in a decanter makes it possible to increase the flow of effluent to be treated, or to increase the efficiency in the decantation of solids.
- the lamellae are plates or profiles that, arranged in parallel, define a series of channels.
- the lamellae are installed inside the settling tank at an intermediate height and covering the entire surface of the tank, usually with an inclined orientation, which forms an angle of between 45° and 65° with respect to the horizontal.
- the water inlet to the decanter is made from the lower part of the tank below the lamellas and the evacuation of the treated water is carried out through the upper part of the tank above the lamellas, the water must circulate through the inclined channels formed for the licks This inclination generates an accumulation of the solids present in the water on the lower face of each lamellar channel, accelerating its decantation. towards the bottom of the tank where they will be evacuated.
- the water, now free of a large part of the solids leaves the lamellar channels through its upper area towards the spillway channels through which it leaves the tank to continue with the treatment process.
- the main problem with lamella clarifiers and the main reason why their efficiency decreases is the impossibility of achieving a homogeneous upward flow through each and every one of the lamella channels installed.
- the support systems on which the lamellas or lamella modules are fixed are usually made using profiles and load-bearing beams that will provide the necessary resistance.
- the surfaces of these support systems will be an obstacle to the passage of the flows that are produced under the lamella modules, acting as deflectors, and generating areas where the lamella channels work with very high ascent speeds.
- lamella settling tanks have areas where the lamellae, instead of having an upward flow, do not have any flow, or even have a downward flow to compensate for the excess flow that runs through preferential areas. .
- the efficiency losses due to these imbalances in the speeds of passage through the different lamellar zones can be very high, the most common values being between 40 and 60% loss of performance. In other words, it settles 40 - 60% of the solids that should settle according to the theoretical design at homogeneous speeds.
- New lamellas have recently been developed whose geometry is specifically designed to solve the aforementioned problems, such as, for example, those disclosed by Spanish patent No. P201830839, property of this same applicant and which refers to a "lamella for decanter and a lamellar module for decanter”.
- the purpose of the flow balancing devices disclosed by P202031173 is to solve the problems of speed imbalances in lamella clarifiers, as well as to provide the modules with protection against sunlight.
- Said invention effectively solves the problem of solar radiation on the lamella modules, but it does not completely and definitively eliminate the flow imbalances through the different areas of the lamella clarifier. For this reason, in order for said balancing device to be able to reach an optimal balance, it would be convenient to increase the loss of pressure when the water passes through, which is characteristic thereof.
- the lamella modules object of the patent P201830839 have continuous channels in the transversal sense delimited by each one of the lamellae that make it up, providing an improvement in the hydraulic performance that occurs due to the velocity gradient inside the channel. .
- the set consisting of a module according to patent P201830839 and a balancer according to application P202031173 presents a good behavior, reducing the differences between maximum and minimum speeds and therefore clearly improving the efficiency of the decanter.
- the balancer does not always manage to achieve, by itself, the necessary pressure loss to sufficiently balance the ascent speeds through all the installed lamellas, and therefore, to be able to eliminate the weir channels.
- Another aspect to improve, in general, in any lamella settling technology is the performance losses due to the transition length that occurs at the entrance of each lamella channel.
- a turbulence can be produced that lasts for a determined distance of the total length of each lamellar channel, until the laminar regime it is stabilized with completely parallel flow lines inside the duct.
- the decantation in the lamellar canal is efficient only when this last condition is met, therefore, there can be a certain length of the canal from its entrance, where the efficiency is not high enough.
- this transition distance can extend between 10 and 40% of the total length of the lamellar canal.
- the inlet area of the lamellar canal accumulates the solids that have been grouped along the entire length of the canal in its evacuation process and therefore its available section for the effluent inlet is reduced. This increases the effluent velocities at the inlet, the turbulence and again contributes to the length of the previously mentioned transition being longer than it should be. Likewise, this accumulation of solids in the lower part of the channel and the aforementioned increase in speed favor the dragging by the upward flow of part of the solids present in this area.
- the desirable efficiency objectives are not reached in large-sized tanks that present high velocity imbalances between their different zones.
- the behavior of the lamella and lamella module according to patent P201830839 is optimal thanks to its longitudinal curvature, but on the other hand, in installations where high speeds occur in certain areas due to the aforementioned imbalances, the transition lengths can reach to last longer than desirable. Under these conditions, a more accentuated loss of efficiency occurs because this first part of the lamellar canal is the one that, due to its smaller angle of inclination with respect to the horizontal, contributes more capacity to the system.
- the present invention is intended to overcome or reduce the problems of the aforementioned technique, as well as to bring additional advantages to the technology.
- a first object of the present invention refers to a lamella for a decanter comprising a rectangular or square plate, in one piece, characterized in that the plate is provided with: a plurality of longitudinal straight ribs that run from the top of the plate to the bottom edge thereof, a plurality of longitudinal straight folds, each of the straight folds extending from the top of the plate to the bottom edge thereof and each of said straight folds being interposed between a pair of longitudinal ribs, so that the space between said pair of longitudinal veins defines a protrusion with V-shaped walls that protrudes forwards in the sagittal direction and on whose edge the straight longitudinal fold is located; a plurality of flaps, one flap being disposed on the front, in the sagittal direction, of each longitudinal straight fold and one flap further being disposed on the rear, in the sagittal direction, of each longitudinal straight fold; four final fins; an end flap being disposed on the front, in the sagittal direction, of each of the longitudinal edges of the
- an upper transverse fold provided at the top of the plate and defining a flat portion extending rearwardly in the sagittal direction a constant distance from the point of fold to the upper edge of the plate; and a lower transverse fold provided in the lower part of the plate, such that the lower part is curved backwards in the sagittal direction.
- the fins form channels that are independent of each other throughout the width of the lamellar module, the flows from the preferred areas are prevented from ascending at a higher speed and then moving through the upper area of the module and under the homogenization system.
- the lamellae of the present invention regardless of the orientation with which the effluent distribution flows under the lamellar pack reach the entrance of the lamellar channels, it is possible to reduce the turbulences that occur by shortening the transition length to establish a stable laminar flow with parallel flow lines.
- These turbulences and therefore the transition length are directly proportional to the entry velocity to the lamellar canal, therefore, by reducing the entry velocities that would occur in the channels located in the preferred zones, we also reduce the transition length. associated with the input speed, optimizing the behavior of all channels and reducing the efficiency losses associated with the transition length.
- the greater inclination with respect to the horizontal of the lamellar canals in the entry area will prevent the transition zone from extending beyond the lower fold of the lamella, to the working area of the lamellar canal.
- This greater inclination of the channels will also favor the evacuation of solids in this entrance area, avoiding the accumulations previously described, increasing the passage section available for the inlet flow, reducing its speed, turbulence and reducing the length of transition and entrainment of part of the solids by the inlet effluent flow.
- both the flaps, provided in the longitudinal straight folds, and the end flaps, provided in the longitudinal edges, extend from the top of the plate to the bottom edge of the plate.
- the one-piece plate is -preferably- a plastic plate manufactured using plastic injection technology.
- Polypropylene (PP), acrylonitrile butadiene styrene (ABS), polystyrene (PS), recycled plastics or combinations thereof are non-limiting examples of preferred plastic materials for manufacturing the one-piece plates of the lamellas according to the present invention.
- the lamella comprises at least one longitudinal straight structural fold provided with fins and which runs from the upper part of the plate to its lower edge, said structural fold being interposed between a pair of longitudinal straight ribs, of so that the space between said pair of longitudinal ribs defines a structural projection with V-shaped walls that protrudes forward in the sagittal direction and on whose edge the structural fold is located, the angle being defined by the V-shaped walls. of the structural boss sharper than the angle defined by the walls of a conventional boss in order to provide the necessary mechanical resistance
- the structural fold is preferably provided with a greater thickness and with at least one anchorage point comprising a perforation intended to house a support element.
- Said perforation is preferably conical.
- the lamella comprises at least one structural fold provided with an upper anchorage point that comprises a perforation closest to the upper transversal fold and a lower anchorage point that comprises a perforation located in the lower part thereof and below the lower transverse fold.
- the lamella also comprises a plurality of structural flaps, one structural flap being arranged on the front, in the sagittal direction, of each longitudinal straight structural fold and one structural flap being further arranged on the rear, in the sagittal direction. sagittal, of each longitudinal straight structural fold.
- the flat portion of the upper part of the plate is provided, on each of its two longitudinal edges, with an upper longitudinal closure.
- a V-shaped baffle is preferably provided, said V-shaped baffles being arranged in the lower plane of the flat portion of the upper transverse fold.
- the V-shaped deflectors and given the partial overlapping of the flat portion of the lamellae, rest on the upper surface of the flat portion of the adjacent lamella and fulfill several functions: on the one hand, they partially close the effluent passage to increase the loss charge up to the values necessary to achieve flow balance in all installed modules and improve the settling process. In addition, they make it possible to collect and channel the flow generated by the nozzles of automatic cleaning equipment, for example, automatic cleaning equipment such as those disclosed by the Spanish patent P201530891.
- Said overlapping between adjacent lamellae is advantageous, because it also reduces the amount of sunlight reaching the interior of the lamellar canals, thereby reducing Consequently, the problems of algae growth and microbiological processes inside them.
- the lower surface of the flat portion of the upper transverse fold is provided with a plurality of projections, each of said projections being aligned with one of the longitudinal straight folds or one of the longitudinal straight structural folds of the plate. .
- a second aspect of the invention refers to a lamella module for a decanter comprising two or more lamellas, according to the first aspect of the invention, arranged in parallel, without direct contact with each other and attached to a support element.
- the lamellae are arranged in such a way that: the lower part of the plate of each one of the lamellae presents an inclination of between 65 and 80° with respect to the horizontal, and the intermediate part of the plate, between the upper transversal fold and the lower transversal fold, presents an inclination of between 45 and 65° with respect to the horizontal; and the flat portion of the upper part of the plate of each of the lamellae forms an angle between 1 ° and 10° with the horizontal.
- Said lamellar canals have an inclination of between 65 and 80° in their lower zone, between the lower edge and the lower transversal fold, with respect to the horizontal, that is, greater than in their intermediate zone; -In addition, the lamellar canals present lateral openings in their lower area and prior to the lower transverse fold. Openings generated by the flaps provided in the longitudinal straight folds, the end flaps, provided in the longitudinal edges, and, where appropriate, the structural flaps provided in the structural folds;
- the flat portion defined from the upper transversal fold presents a small angle (between 1o and 10°) with respect to the horizontal, which allows it to overlap with part of the flat portion of the lamella located immediately behind, incorporating into its own structure the homogenization system;
- This overlap reduces the section available for the passage of water, generating an increase in its speed and therefore in its head loss, thus acting as a flow balancing system that is integrated into the lamella module itself. In addition, it serves as protection against solar radiation.
- the lamellar module is characterized by:
- each of the lamellas is provided with at least one longitudinal structural fold, provided with an upper anchor point that comprises a perforation closest to the upper transversal fold and a lower anchor point that comprises a perforation located in the lower part of said fold longitudinal structural;
- the support element comprises at least two groups of threaded rods, the first group of threaded rods being arranged so that they go through the perforations of the upper anchorage point of the lamellae and the second group of threaded rods being arranged so that they go through the perforations of the lower anchorage point of the lamellae.
- the lamellar module preferably also comprises:
- At least one upper spacer arranged at an upper anchor point of a lamella, said upper spacer being provided with a through hole to allow passage through it of at least one of the threaded rods of the first group; and - at least one lower spacer, arranged at a lower anchor point of a lamella, said lower spacer being provided with a through hole to allow the passage through it of at least one of the threaded rods of the second group.
- spacers are preferably provided with frustoconical bushings intended to accommodate at least one threaded rod and to be connected, through the lamella, with at least one other bushing provided in another adjacent spacer.
- the spacers preferably have an inclination in their area of support and fixation with each of the lamellas that will determine the orientation of each of the lamellas once the lamella module has been assembled.
- end pieces will complete the support element at each of the ends of the lamellar module, providing it with a vertical plane and perpendicular to the threaded rod that will facilitate correct support for the tightening means, preferably nuts, that will fix the assembly.
- the lower spacers arranged in the vicinity of the lower edge of the lamellae, are preferably provided with coupling means to a support base.
- Said support base is intended to be placed inside the tank of a decanter and, in addition to serving as a base to support the module, it also acts as an anti-flotation device.
- the support base comprises at least one inverted T-shaped profile where the coupling means of the lower spacers will be housed.
- Figure 1 is a perspective view of a first embodiment of a lamella according to the present invention.
- Figure 2 is a perspective view of a second embodiment of a lamella according to the present invention.
- Figures 3A and 3B are enlarged views showing - in more detail - the top and bottom, respectively, of the lamella of Figure 1;
- Figure 4 is an enlarged view that shows -in more detail- the upper part of an embodiment of a lamella in which the flat portion of its upper part is provided with V-shaped pieces and projections to partially close the effluent passage channels. ;
- Figure 5A shows a possible embodiment of a lamellar module according to the present invention
- Figures 5B and 5C are enlarged views showing - in more detail - the upper part and the lower part, respectively, of the lamellar module of Figure 5A;
- Figure 5D is a side view, partially exploded, of the lamellar module of Figure 5A.
- Figure 5E is an enlarged detail, from a bottom view, of the lamellar module of Figure 5A.
- Figure 1 shows a first embodiment of a lamella (1) according to the present invention.
- said figure illustrates, for greater clarity, the following directions necessary to describe the object of the invention: longitudinal direction (L), transverse direction (T) and sagittal direction (S).
- said lamella comprises a rectangular plate (5) in one piece, provided with an upper part (5a), which ends in an upper edge (5c) and a lower part (5b), which ends in bottom edge (5d).
- end fins (40") are arranged on each of the two longitudinal edges of the plate (5).
- the plate (5) comprises a plurality of longitudinal straight ribs (10) that run from the upper part (5a) to the lower edge (5d) thereof.
- each of the folds (15) is interposed between a pair of longitudinal ribs (10), so that the space between said pair of longitudinal ribs (10) defines a projection (30), or crest, with walls in V-shaped that protrudes forwards in the sagittal direction (S) and on whose edge the straight longitudinal fold (15) is located.
- Each of the straight longitudinal folds (15) is provided with flaps (40) on the fold that extend along its entire longitudinal extension.
- the plate (5) is provided with an upper transverse fold (20) provided in the upper part (5a) and defining a flat portion (20a). Said flat portion (20a) extends backwards along the sagittal direction (S) a constant distance from the fold point to the upper edge (5c) of the plate (5).
- the lower part (5b) of the plate (5) is provided with a lower transverse fold (60), which curves backwards according to backwards according to the sagittal direction (S), so that, when the lamella is in its working position, said lower part (5b) of the plate forms a greater angle with respect to the horizontal than the intermediate part, included between the upper transversal fold (20) and the lower transversal fold (60).
- the lamella (1) for the decanter also comprises straight longitudinal structural folds (15') that run from the (5a) of the plate (5) to its lower edge (5d). Said structural folds (15') are provided with structural wings (40') that extend longitudinally over most of their longitudinal extension (with the exception of the periphery of the perforations (50a and 50b).
- Each structural fold (15') is interposed between a pair of longitudinal straight ribs (10), such that the space between said pair of longitudinal ribs (10) defines a structural projection (30'), with V-shaped walls. , which protrudes forwards in the sagittal direction (S) and on whose edge the structural fold (15') is located.
- the angle defined by the V-shaped walls of the structural projection (30') is more acute than the angle defined by the walls of a conventional projection (30) and presents a greater thickness in order to increase its mechanical resistance.
- the structural folds (15') are provided, in this embodiment of the invention, with an upper anchor point provided with a perforation (50a) and a lower anchor point provided with a perforation (50b).
- the perforations (50a, 50b) are intended to house a rod that forms part of the lamellar module support element.
- Figures 3A and 3B are enlarged views showing -in more detail- the upper and lower part, respectively, of the lamella of Figure 1.
- Figure 2 for its part, is a perspective view of a second embodiment of a lamella (1) according to the present invention provided with elements very similar to those of the embodiment of Figure 1.
- Figure 2 shows shows schematically how, in a preferred embodiment of the invention, the deflectors (70) are arranged in V-shaped. Said V-shaped deflectors (70) are located under the lower surface of the flat portion (20a) of the upper transverse fold of the sheet and are visible from the perspective illustrated in Figure 2.
- Figure 4 shows another embodiment of a lamella according to the present invention, which is also provided with V-shaped deflectors (70) under the lower surface of the flat portion (20a) of the upper transverse fold of the sheet and which, furthermore, it is provided with projections (90).
- V-shaped deflectors (70) and the projections (90) contemplated by the present invention are intended to partially occlude the lamellar channels to reduce the section of water passage, increase its speed of passage and therefore the loss of load generated to improve its performance during the decantation process.
- FIGS 5A, 5B, 5C, 5D and 5E show a possible embodiment of a lamellar module (100) for a decanter according to the invention.
- the module (100) comprises a plurality of lamellas (1) arranged in parallel, without direct contact with each other.
- each of the lamellas (1) is provided with two longitudinal structural folds, provided with an upper anchor point comprising a perforation (50a) and a lower anchor point comprising a perforation (50b).
- the lamellar module (100) also comprises two groups of threaded rods (140a) and (140b) (visible in Figure 4D).
- first group of threaded rods (140a) goes through the perforations (50a) of the upper anchoring point of the lamellas (1)
- second group of threaded rods (140b) goes through the perforations (50b) of the lower anchorage point of the lamellas.
- upper spacers (105a) are arranged at the upper anchorage point between each pair of adjacent lamellae (1).
- the upper spacers (105a) are provided with a through hole fitted with a frustoconical bushing that allows one of the threaded rods (140a) of the first group to be housed inside.
- FIG 5D in front of the first lamella (1) and behind the last lamella (1) of the lamella module (100) there are two upper end pieces (110a).
- lower spacers (105b) are arranged at the lower anchor point between each pair of adjacent lamellae (1).
- the lower spacers (105b) are also provided with a through hole with a frustoconical bushing that allows one of the threaded rods (140b) of the second group to be housed inside.
- two lower end pieces (110b) in front of the first lamella (1) and behind the last lamella (1) of the lamella module (100) there are two lower end pieces (110b).
- the lower spacers (105b) are provided with coupling means (130) to a support base (120) in the shape of an inverted T profile, designed to be placed inside a decanter tank and which, in addition to serving as base to support the module, it also acts as an anti-floating device.
- These coupling means (130) consist of two tabs located in the lower part of said separator and which will fit with the upper part of each inverted T-shaped profile. Some perforations in the pins and profile will allow to accommodate a through element that will fix the modules to the support profiles.
- the through elements can be, for example, screws or rivets.
- profiles or structural beams may be necessary to provide additional resistance to the support bases or inverted T profiles.
- Figure 5E shows how, in this embodiment of the lamellar module, lateral openings (150) are formed in the lower part of the lamellar canals, due to the fact that the plate of each one of the lamellas (5) presents, in its lower part, a greater inclination with respect to the horizontal than in its intermediate part.
- said modules (100) have the following characteristics:
- lamellae (1) that compose it are arranged parallel to each other; -
- the lamellar modules (100) thus formed will present independent lamellar channels delimited by the surfaces of the planes on both sides of each longitudinal rib (10), the wings (40), the structural wings (40') and, where appropriate, the final fins (40").
- the geometry of these channels remains constant from the lower transversal fold (60) to the height of the upper transversal fold (20), where its geometry is transformed into a low-section flat channel;
- each lamella will partially overlap with the flat area (20a) of the adjacent lamella.
- the free distance between the lower and upper planes of each lamella in this area of overlap will be between 2 and 6 mm.
- the overlap zone will preferably extend between 15 and 25 mm;
- the V-shaped deflector (70) resting on the upper surface of the flat area is housed under the lower surface of the flat area. flat area of the adjacent lamella (1), creating a closure to the passage of water.
- the projections (90) that rest on the upper surface of the flat area of the adjacent lamella are housed under the lower surface of the flat area.
- grooves between 8 mm and 20 mm in length and preferably between 2 mm and 6 mm in height will be formed. .
- this sizing can vary depending on the needs of each installation.
- each formed channel will correspond to two grooves of identical size, so that all the water that flows through the channel must necessarily pass through the set of the two grooves, at the speed determined by its section. of passage and generating the head loss corresponding to said speed.
- the head loss generated at nominal flow in the slots of each channel will prevent the flow from increasing appreciably, diverting flows under the modules towards channels with a tendency at a lower flow and equalizing the ascent speeds in all the installed channels.
- each lamella channel will be equipped in its lower zone through which the water enters, with a section with a greater inclination with the horizontal (between 65 and 80°). In this area, turbulence due to the change of direction will be produced, reducing the transition distance in which the decantation is not effective.
- the water will continue its ascent through the work zone of the lamellar canal -that is, its intermediate zone- of lesser inclination with the horizontal (between 45 and 65°), but already presented parallel flow lines typical of a stable laminar regime, increasing the performance of the process.
- This entrance zone likewise, and given its greater inclination, will favor the evacuation of solids, avoiding their accumulation at the entrance of the channel, increasing the available surface area for water to pass through, reducing its entry speed and minimizing the dragging of solids from again in the upward direction.
- the longitudinal wings (40, 40' and 40”) are sized so that the lamellar canals remain partially open in the lateral areas. These openings will allow, with transversal water distributions, or that present a transversal component, part of the flow to pass through the opening to the adjacent channel, with low velocity and partially laminated, which, again, will contribute to reducing turbulence from entrance and the non-effective transition zone.
- Each module (100), in its final placement inside the tank and on its support bases (120), will be aligned with the adjacent module and perfectly coupled to each other, so that the last lamella of the previously placed module will overlap in the same way with the first module lamella placed below.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Water Treatments (AREA)
- Centrifugal Separators (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Packaging Frangible Articles (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280065821.6A CN118043116A (zh) | 2021-09-30 | 2022-07-27 | 用于澄清器的片状件和片状件模块 |
KR1020247010373A KR20240074775A (ko) | 2021-09-30 | 2022-07-27 | 청징기용 라멜라 및 라멜라 모듈 |
IL311748A IL311748A (en) | 2021-09-30 | 2022-07-27 | Sedimentation plates and sedimentation plate chamber for the purifier |
CONC2024/0003405A CO2024003405A2 (es) | 2021-09-30 | 2024-03-19 | Lamela y módulo lamelar para decantador |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ESP202130915 | 2021-09-30 | ||
ES202130915A ES2937757B2 (es) | 2021-09-30 | 2021-09-30 | Lamela y modulo lamelar para decantador |
Publications (1)
Publication Number | Publication Date |
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WO2023052660A1 true WO2023052660A1 (es) | 2023-04-06 |
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ID=85723996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/ES2022/070495 WO2023052660A1 (es) | 2021-09-30 | 2022-07-27 | Lamela y módulo lamelar para decantador |
Country Status (6)
Country | Link |
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KR (1) | KR20240074775A (es) |
CN (1) | CN118043116A (es) |
CO (1) | CO2024003405A2 (es) |
ES (1) | ES2937757B2 (es) |
IL (1) | IL311748A (es) |
WO (1) | WO2023052660A1 (es) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4921609A (en) * | 1989-06-26 | 1990-05-01 | Fromson Robert E | Circular lamella clarifier |
FR3043089A1 (fr) * | 2015-11-04 | 2017-05-05 | Haffner Energy | Dispositif d'epuration lamellaire sur cendres fondues |
ES2744323A1 (es) * | 2018-08-24 | 2020-02-24 | Atca Asesoria Proyectos E Instalaciones S L | Lamela para decantador y modulo lamelar para decantador |
-
2021
- 2021-09-30 ES ES202130915A patent/ES2937757B2/es active Active
-
2022
- 2022-07-27 KR KR1020247010373A patent/KR20240074775A/ko unknown
- 2022-07-27 IL IL311748A patent/IL311748A/en unknown
- 2022-07-27 CN CN202280065821.6A patent/CN118043116A/zh active Pending
- 2022-07-27 WO PCT/ES2022/070495 patent/WO2023052660A1/es active Application Filing
-
2024
- 2024-03-19 CO CONC2024/0003405A patent/CO2024003405A2/es unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4921609A (en) * | 1989-06-26 | 1990-05-01 | Fromson Robert E | Circular lamella clarifier |
FR3043089A1 (fr) * | 2015-11-04 | 2017-05-05 | Haffner Energy | Dispositif d'epuration lamellaire sur cendres fondues |
ES2744323A1 (es) * | 2018-08-24 | 2020-02-24 | Atca Asesoria Proyectos E Instalaciones S L | Lamela para decantador y modulo lamelar para decantador |
Also Published As
Publication number | Publication date |
---|---|
CN118043116A (zh) | 2024-05-14 |
IL311748A (en) | 2024-05-01 |
KR20240074775A (ko) | 2024-05-28 |
CO2024003405A2 (es) | 2024-04-08 |
ES2937757B2 (es) | 2023-11-29 |
ES2937757A1 (es) | 2023-03-30 |
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